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What does the underscore mean in: _("Undo")

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Join Date: Dec 2008

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edgar5

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What does the underscore mean in: _("Undo")

Sep 23rd, 2009

Okay, it's been a long time since I've programmed in C++! Languages change considerably in the last 5 years or so. In reviewing some source code I often see statements like this:

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      wxString label;
      if (name == wxT("Undo")) {
         label = _("Undo");
      wxString label;
      if (name == wxT("Undo")) {
         label = _("Undo");

obviously, I snipped out a lot of code.

My question is, what does the underscore mean in:

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 C++ Syntax (Toggle Plain Text) 
_("Undo")
_("Undo")

-Ed
MS Vista Ultimate 64-bit; Visual Studio 2008 & 2010 beta; Visual Basic; Visual C++

Asus P5E3 Deluxe w/ Intel E6850, 8 GB OCZ DDR3 PC3-12800, SAPPHIRE HD3870 GPU

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ShawnCplus ShawnCplus is offline

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Re: What does the underscore mean in: _("Undo")

Sep 23rd, 2009

_ is usually associated with gettext with deals with text localization.

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Join Date: Dec 2008

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Reputation: edgar5 is an unknown quantity at this point

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edgar5

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Re: What does the underscore mean in: _("Undo")

Sep 23rd, 2009

OK, that might be enough for me to actually figure out what it is being used for here. I thought it might be some new C++ convention.

Thanks!

Last edited by edgar5; Sep 23rd, 2009 at 4:52 pm.

-Ed
MS Vista Ultimate 64-bit; Visual Studio 2008 & 2010 beta; Visual Basic; Visual C++

Asus P5E3 Deluxe w/ Intel E6850, 8 GB OCZ DDR3 PC3-12800, SAPPHIRE HD3870 GPU